Unless the “cherry” directly hits the gas, no problem. Every gas station I’ve been to is outdoors, therefore the fumes can’t concentrate to a level where combustion can occur. I live in North Dakota, if there was an indoor gas station, I suspect we would have one of the first.
Vapor, it is the gas vapor that burns not the liquid. While it is not likely that the vapor will get to a combustible concentration it is possible.
If the guy is dumb enough to smoke when refueling (despite the NO SMOKING signs all around) then he is probably dumb enough to leave the cig in his hand when he goes to remove the nozzle from the tank…
Argh! Vapor is what I meant. I’m not saying it’s safe (I would never do it). But the warning is for legal purposes, to prevent lawsuits. The same as turning off your engine, which I suspect is because sometimes a running car’s electrical system can sometimes cause a spark somehow. That, or it’s easier to drive off with a running car.
I was watching Mythbusters on the Discovery Channel a week or so ago and they were trying to ignite flammable materials in a toilet bowl to debunk a particular urban legend.
Anyway, when they dropped a lit cigarette into various flammable materials, including gasoline, they never ignited, the cigarette was merely extinguished. When they dropped a lit match, however, things went boom. It should go without saying that one should not try this at home, or at the gas station for that matter.
Also, Seekingtruth, my fellow Nodackian, gas fumes tend to pool, as they are heavier than air. If dipshit drops his cig, or the cherry drops, it’s boomarama.
If it were possible to blow oneself up by smoking at a gas station, then wouldn’t somebody have already done it by now? I’ve never heard of this happenning.
(Not that I’m saying it’s a good idea or anything.)
Even at its hottest (~400 [sup]o[/sup]F) a lit cigarette isn’t hot enough to ignite gasoline vapors, which have an ignition point of between 500 - 860 [sup]o[/sup]F, depending on the formulation and additives.
Yikes! I take that back. According to www.physlink.com/Education/AskExperts/ae1.cfmhl=en&ie=UTF-8]this cached Google page, a cigarette can burn much hotter than my own measurements indicated. It seems under the right set of circumstances, a lit cigarette certainly can ignite gasoline vapors.
I was in St Louis and got a flat tire at 9 pm on a Saturday night.
We went to a local gas station to get the spare filled up and ask where we could get a tire at this late hour.
The attendant came out smoking. After he gave us his business card (he sells siding and housepaint on the side, but don’t tell his boss because he already got reprimanded once) he flicked his lit cigarette at the pumps.
When I was living in West Africa during my (brief) stint in the Peace Corps, I was positive that my last moments would be spent in the back of some ancient Peugot. Every time I’d catch the public transit car, we’d pull into the gas station to fill it up, and, without fail, they’d leave the engine running through the whole process. I’d always be sitting in the hot seat immediately above the gas tank, and the car would * always* be inhumanly packed with fellow passengers/sufferers (so that if there were a fire, there’s no way in hell I’d ever be able to claw my way out). I don’t recall any of them smoking, but I may have been numbed to it by then. I don’t know if they didn’t realize the danger, or didn’t care, but nobody else ever seemed bothered by it.
On still, dry, cold days when conditions are just right it is possible for static electricity to set off an explosion or fire at the gas pumps.
If the conditions are right, a sufficient amount of fuel vapors can collect in an area, even outside, to cause an explosion when an ignition source is present.
My mother once managed a gas station, and she would always be on her staff’s cases to not start the gas pumps if the person’s car was on, or if they were smoking. There was an intercom which the staff would use to ask the customers to turn off the car or put out the cigarette. If someone got caught at the pumps doing either of these two things while pumping gas, my Mom would get a hefty fine, because it was her responsibility to get people to conform to the law. In Canada, at least, it’s quite illegal to smoke within a certain distance of the gas pumps.
(I apologize for how incomprehensible that story was.)